One day last week my black ops disc randomly had this come up and it starts loading saying Friends and Party playing COD Black ops but then goes to this error. I have tried this with my disc and 2 other friends disc but do not know what to do. I've been able to play other games such as Fifa, MW2 and COD4 but only problems with Black ops.
OT: The black ops discs are all fine with no scratches whatsoever,
Thanks you to all that may help.